chaf·ing dish /ˈʧefɪŋ-/
  Chaf·ing n.  The act of rubbing, or wearing by friction; making by rubbing.
  Chafing dish, a dish or vessel for cooking on the table, or for keeping food warm, either by coals, by a lamp, or by hot water; a portable grate for coals.
  Chafing gear Naut., any material used to protect sails, rigging, or the like, at points where they are exposed to friction.
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  chafing dish
       n : a metal pan over a heater; used to cook or to keep things
           warm at the table